Why dont you FD guys take a 2v battery and series it with the 6 cell 12.8v LA battery that you usually use, matching the ah ratings.
I use a 7 X 2v lead-acid cell backup battery system in my 15.2v power supply system. In a power failure I have 14.6v available. On 28/06/2012 18:07, Peter Wollan wrote: > The problem here isn't the battery AH capacity, but the voltage > supply. It could be dropping below 10 vdc because both radios are on > the same supply, or because the power supply wires are too fine gauge, > or because the battery is defective. > > The K3 is less robust to supply voltage than the other Elecraft > radios. The K2 is rated for 10-15 volts; the K1, KX1, and KX3 go > down a lot lower, I think 8 volts. I looked at the K3 documents to > see what minimum voltage it requires, and I couldn't find it -- I > think it's something like 11, but it may be 11.5 or even 12. > > You'd probably do fine just by using a separate battery for each > radio, and not letting it run down too far. A voltage booster isn't > needed, as lots of operators all over the world have demonstrated. > > Peter W0LLN > > > On Thu, Jun 28, 2012 at 12:19 PM, John Kountz<[email protected]> wrote: >> ... In tandom >> operation, the Eagle was not affected by momentary voltage dips (below 10 >> VDC) whereas the K3 would shut down. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
